- Staged files are now served through a signed URL (Django signing, 24h)
so <img>/<video> tags can load previews without an Authorization
header; the file endpoint accepts header auth or a valid signature,
rejects tampered signatures, and still scopes access to the owner
- Serializer responses now carry the request context so URLs are signed
per user
- Add .webp to the allowed extensions (backend + upload hint)
JakeBreath
7deb6084b6